Title :
Analysis and design of a 1.3-mW current-reuse RF front-end for the MICS band
Author :
Cruz, Hugo ; Hong-Yi Huang ; Shuenn-Yuh Lee ; Ching-Hsing Luo
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng-Kung Univ., Tainan, Taiwan
Abstract :
This paper presents a wide-band low-power super-heterodyne RF front-end for the Medical Implant Communications Services (MICS) band. The front-end consists of a low-noise amplifier (LNA), a mixer, buffers, and passive baluns. The proposed circuits feature the techniques of current-reuse, MOSFET back-gate coupling, feedback, and current bleeding to achieve low power under acceptable noise figure (NF) levels for the MICS application. The RF front-end is implemented in 0.18um standard CMOS process with an area of 1.4mm×1.2mm at a supply voltage of 1.8V. Measurement results reveal the capability of a minimum sensitivity of -97dBm, maximum conversion gain of 30dB, and total noise figure (NF) of 11.6 and 13.2 dB while consuming 1.3mW and 2.9mW, respectively.
Keywords :
CMOS integrated circuits; baluns; biomedical communication; buffer circuits; low noise amplifiers; low-power electronics; mixers (circuits); passive networks; radio receivers; CMOS; LNA; MICS band; MOSFET back-gate coupling; buffers; current bleeding; current-reuse RF front-end; gain 30 dB; low-noise amplifier; medical implant communications services; mixer; noise figure; noise figure 11.6 dB; noise figure 13.2 dB; passive baluns; power 1.3 mW; power 2.9 mW; size 0.18 mum; size 1.2 mm; size 1.4 mm; voltage 1.8 V; wide-band low-power super-heterodyne RF front-end; CMOS integrated circuits; Gain; Microwave integrated circuits; Mixers; Noise measurement; Radio frequency; Receivers;
Conference_Titel :
Circuits and Systems (ISCAS), 2014 IEEE International Symposium on
Conference_Location :
Melbourne VIC
Print_ISBN :
978-1-4799-3431-7
DOI :
10.1109/ISCAS.2014.6865396
